Branches organopolysiloxane

Details Branches organopolysiloxane Branches organopolysiloxane

C - Chemistry, Metallurgy

08

G

C08G 77/04 (2006.01) C08G 77/06 (2006.01) C08G 77/20 (2006.01)

Patent

CA 2081128

ABSTRACT The introduction of a branched organopolysiloxane in which polysiloxane with the formula SiO2 constitutes the branching center or branch origin and the terminal on only one side of diorganopolysiloxane is bonded to the branch origin wherein this bonding is exactly to the branch origin. The branched organopolysiloxane is described by formula (SiO4/2)x(R12ASiO1/2)y(R13SiO1/2)z(RO1/2 u' wherein each R1 is independently selected from a group consisting of C1-8 alkyls, haloalkyls, alkenyls, and aryls; A is described by formula (OSiR2R3)n-R4, wherein R2 and R3 are independently selected from a group consisting of C1-8 alkyls, haloalkyls, alkenyls, and aryls, R4 is selected from a group consisting of C1-8 alkyls, haloalkyls, alkenyls, hydrogen atom and hydroxyl, and 1 ? n ? 1,000; R is selected from a group consisting of hydrogen atom and C1-8 alkyls; 2 ? x ? 500; 0 ? z; 0 ? u ? 15; 2 ? y + z + u ? 150; 0.3 ? (y + z + u)/x ? 3.0; z + u > 0; and 0 < u/(y + z + u) ? 0.1.

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